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Finding the Fourth Proportional to 513,480.60, 708,622.56 and 287,125.56

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Solution

The fourth proportional to 513,480.60, 708,622.56 and 287,125.56 is: 396,244.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,480.60 : 708,622.56 = 287,125.56 : x
  2. Step 2: Convert to fraction form
    513,480.60/708,622.56 = 287,125.56/x
  3. Step 3: Cross multiply
    513,480.60x = 708,622.56 × 287,125.56
  4. Step 4: Simplify right side
    513,480.60x = 203,463,649,368.63
  5. Step 5: Solve for x
    x = 203,463,649,368.63/513,480.60
  6. Step 6: Final answer
    x = 396,244.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.